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MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another fairly simple one, using Arduino (nano or uno) + MCP4725 (DAC). ** https://hkadesign.org.uk/monotronkb.html for yet another version Alternative: CV from something else VCF MK's Diode Ladder VCF Kassutronic's KS-20 https://kassu2000.blogspot.com/2019/07/ks-20-filter.html ** uses an LM13700 OTA (operational transconductance amplifier) (~$1.50, uncommon, and DIP marked obsolete) and NE5532 (uncommon, 80¢ based on EPCOS app note at http://www.cypress.com/file/140006/download DFN, 6 Pin (https://www.diodes.com/assets/Package-Files/U-DFN2018-6.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-108-02-xx-DV-TE, 8 Pins (https://www.molex.com/pdm_docs/sd/026604020_sd.pdf), generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90814-0012, 12 Pins (http://www.farnell.com/datasheets/2157639.pdf), generated with kicad-footprint-generator ipc_gullwing_generator.py TSOP-I, 56 Pin (https://www.espressif.com/sites/default/files/documentation/esp32-s2_datasheet_en.pdf#page=41), generated with kicad-footprint-generator Molex Pico-Clasp series connector, 53261-1571 (http://www.molex.com/pdm_docs/sd/532610271_sd.pdf), generated with kicad-footprint-generator Samtec HLE .100" Tiger Beam Cost-effective Single Beam Socket Strip, HLE-123-02-xxx-DV-BE, 23 Pins per row (http://www.molex.com/pdm_docs/sd/439151404_sd.pdf), generated with kicad-footprint-generator JST EH vertical JST J2100 series connector, BM02B-ACHSS-GAN-ETF (http://www.jst-mfg.com/product/pdf/eng/eACH.pdf), generated with kicad-footprint-generator JST XA series connector, B3B-XH-AM, with boss (http://www.jst-mfg.com/product/pdf/eng/eZE.pdf), generated with kicad-footprint-generator Molex Picoflex Ribbon-Cable Connectors, 90814-0008, 8 Pins per row (http://suddendocs.samtec.com/prints/hle-1xx-02-xx-dv-xe-xx-mkt.pdf, http://suddendocs.samtec.com/prints/hle-thru.pdf), generated with kicad-footprint-generator JST SH series connector, S12B-XASK-1 (http://www.jst-mfg.com/product/pdf/eng/eXA1.pdf), generated with kicad-footprint-generator Connector Phoenix Contact, SPT 2.5/5-V-5.0-EX 1732522 Connector Phoenix Contact connector footprint for: MCV_1,5/2-GF-5.08; number of pins: 12; pin pitch: 5.00mm; Angled; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C or ISO 7049-ST 2.2x4.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1776015 12A Generic Phoenix Contact connector footprint for: MC_1,5/8-GF-3.81; number of pins: 08; pin pitch: 3.81mm; Angled; threaded flange || order number: 1757310 12A || order number: 1836299 8A 320V Generic Phoenix Contact connector footprint for: GMSTBV_2,5/2-GF-7,62; number of pins: 14; pin pitch: 5.00mm; Vertical; threaded flange; footprint includes mount hole for mounting screw: ISO 1481-ST 2.2x6.5 C (http://www.fasteners.eu/standards/ISO/7049/) || order number: 1923953 16A (HC Generic Phoenix Contact.

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